Encapsulation and Ploy

Author: soumyadip007

Class.ipynb

@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [
     {
@@ -38,6 +38,132 @@
     "print(\"{} is {} years old\".format( blu.name, blu.age))\n",
     "print(\"{} is {} years old\".format( woo.name, woo.age))"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Bird is ready\n",
+      "Penguin is ready\n",
+      "Penguin\n",
+      "Swim faster\n",
+      "Run faster\n"
+     ]
+    }
+   ],
+   "source": [
+    "# parent class\n",
+    "class Bird:\n",
+    "    \n",
+    "    def __init__(self):\n",
+    "        print(\"Bird is ready\")\n",
+    "\n",
+    "    def whoisThis(self):\n",
+    "        print(\"Bird\")\n",
+    "\n",
+    "    def swim(self):\n",
+    "        print(\"Swim faster\")\n",
+    "\n",
+    "# child class\n",
+    "class Penguin(Bird):\n",
+    "\n",
+    "    def __init__(self):\n",
+    "        # call super() function\n",
+    "        super().__init__()\n",
+    "        print(\"Penguin is ready\")\n",
+    "\n",
+    "    def whoisThis(self):\n",
+    "        print(\"Penguin\")\n",
+    "\n",
+    "    def run(self):\n",
+    "        print(\"Run faster\")\n",
+    "\n",
+    "peggy = Penguin()\n",
+    "peggy.whoisThis()\n",
+    "peggy.swim()\n",
+    "peggy.run()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Selling Price: 900\n",
+      "Selling Price: 900\n",
+      "Selling Price: 1000\n"
+     ]
+    }
+   ],
+   "source": [
+    "### Encapsulation\n",
+    "class Computer:\n",
+    "\n",
+    "    def __init__(self):\n",
+    "        self.__maxprice = 900\n",
+    "\n",
+    "    def sell(self):\n",
+    "        print(\"Selling Price: {}\".format(self.__maxprice))\n",
+    "\n",
+    "    def setMaxPrice(self, price):\n",
+    "        self.__maxprice = price\n",
+    "\n",
+    "c = Computer()\n",
+    "c.sell()\n",
+    "\n",
+    "# change the price\n",
+    "c.__maxprice = 1000\n",
+    "c.sell()\n",
+    "\n",
+    "# using setter function\n",
+    "c.setMaxPrice(1000)\n",
+    "c.sell()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "### Polymorphism \n",
+    "class Parrot:\n",
+    "\n",
+    "    def fly(self):\n",
+    "        print(\"Parrot can fly\")\n",
+    "    \n",
+    "    def swim(self):\n",
+    "        print(\"Parrot can't swim\")\n",
+    "\n",
+    "class Penguin:\n",
+    "\n",
+    "    def fly(self):\n",
+    "        print(\"Penguin can't fly\")\n",
+    "    \n",
+    "    def swim(self):\n",
+    "        print(\"Penguin can swim\")\n",
+    "\n",
+    "# common interface\n",
+    "def flying_test(bird):\n",
+    "    bird.fly()\n",
+    "\n",
+    "#instantiate objects\n",
+    "blu = Parrot()\n",
+    "peggy = Penguin()\n",
+    "\n",
+    "# passing the object\n",
+    "flying_test(blu)\n",
+    "flying_test(peggy)"
+   ]
   }
  ],
  "metadata": {